Alert archive / Ohio / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 92, NWS Wilmington, OH
NWS Wilmington, OH issued this severe thunderstorm warning at May 29, 1998, 4:27 PM EDT for Union County, Ohio. It was in force for 58 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 29, 1998, 4:27 PM EDT (20:27 UTC)
- Expired
- May 29, 1998, 5:25 PM EDT
- In force
- 58 min
- Issued by
- NWS Wilmington, OH
- Area
- Whole counties
County Union County, OH
The radar
The Cincinnati radar (KILN), 105 km from the middle of the area, began a volume at 20:30 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 29, 4:45 PM EDT | Hail 0.75 | Marysville, OH | |
| May 29, 5:08 PM EDT | Thunderstorm Wind 50 | Magnetic Spgs, OH | Numerous trees downed. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 29, 3:30 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.5 hours before the alert went out and 103 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 410 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1085 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 80 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at May 29, 2:55 PM EDT, 1 hour 32 minutes earlier.
Area forecast discussion, May 29, 2:55 PM EDT, 1 hour 32 minutes before
FORECAST COORDINATION MESSAGE NATIONAL WEATHER SERVICE WILMINGTON OH 255 PM EDT FRI MAY 29 1998 MAIN COLD FRNT STILL WELL N OF REGION ACRS N LWR MI THRU CNTL LAKE MI/CNTL WI...WL PUSH INTO CWA IN WEAKENED STATE LATER TONITE AND SHUD STALL OUT SOMEWHERE N OF OH RVR. WITHIN CWA...DWPT BOUNDARY PUSHING TWD S THRU NW COUNTIES...SCT TSTMS NOW DEVELOPING ALONG THIS BOUNDARY. FARTHER S...ISOLD SHRA/TSRA HAVE BEEN DEVELOPING/DISSIPATING ALONG OLD OUTFLW BOUNDARY INVOF RICH-DAY-CMH. THESE BOUNDARIES SHUD REMAIN FOCUS FOR TSTM DEVELOPMNT WELL INTO THIS EVE...AND NEW OUTFLW BOUNDARIES WILL COMPLICATE THIS SIMPLIFIED SCENARIO. MEANWHILE...TSTMS SHUD GRADUALLY DIMINISH AFTER DARK...BUT MAIN COLD FRNT MAY PRODUCE A FEW ADDL SHRA/TSRA...ESP N OF OH RVR...AS IT PUSHES INTO REGION LATER TONITE. SUGGEST POPS AT LEAST THRU THIS EVE...GRADUATED FROM ABT 50% CNTL/N SECTIONS (WITH MENTION OF SVR) TO 20-30% FAR S. SAT...XPCT ANOTHER VERY WARM AND HUMID DAY. SFC BNDRY WL REMAIN NEARLY STATIONARY ACRS CWA AND WL PROVIDE ANOTHER CHC FOR SCT TSRA...ESP PM AND ESP N OF OH RVR. SAT NITE...SFC LO OVR N PLAINS WL INTENSIFY AND HEAD INTO N GREAT LAKES. AS A RESULT...SW FLW/WAA WL INTENSIFY ACRS CWA...AND SFC BOUNDARY WL HEAD N AS WARM FRNT. MDS SUGGEST MCS WL DEVELOP N OF WARM FRNT AND PROGGED TO PASS JUST N OF CWA. HOWEVER...ETA GRIDDED/GARP DATA SUGGESTS OUTFLW FROM MCS WL INTERACT WITH WAA TO PRODUCE NEW TSTMS INVOF N/W SECTIONS TWD SUN AM. SUN...STRONG COLD FRNT WL APPROACH REGION FROM NW...AND WARMEST AIRMASS SO FAR THIS SEASON WL FLOOD INTO CWA ON STRONG SW WINDS. ODDS ARE COLD FRNT WL REMAIN NW OF CWA THRU DAY...BUT CONDITIONS WILL BECOME FAVORABLE FOR TSTMS DURG PM...SOME LIKELY SEVER...AND PREFER LIKELY POPS PER AVN MOS. CVG 64/88/70/92 3326 DAY 64/86/68/92 4436 CMH 62/87/68/92 4426 PRT 61/89/68/94 2326 ROWLEY
In the hours before
Special weather statement, May 29, 11:30 AM EDT, 4 hours 57 minutes before
OHZ026-034-035-042>046-051>056-060>065-074-INZ050-058-059-292100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 1130 AM EDT (1030 AM EST) FRI MAY 29 1998 THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA HAS INDICATED THAT THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS ACROSS WEST CENTRAL AND CENTRAL OHIO...THE MIAMI AND WHITEWATER VALLEYS TODAY AND TONIGHT. A VERY WARM AND HUMID AIR MASS ACROSS THE REGION WILL PRODUCE INCREASINGLY FAVORABLE CONDITIONS FOR THUNDERSTORMS THIS AFTERNOON. A FEW OF THESE STORMS MAY BECOME SEVERE WITH DAMAGING WINDS AND LARGE HAIL. AREA SPOTTER GROUPS MAY BE ACTIVATED LATER THIS AFTERNOON OR THIS EVENING. STAY TUNED FOR UPDATES AND ADDITIONAL INFORMATION. ROWLEY
Special weather statement, May 29, 2:05 PM EDT, 2 hours 22 minutes before
OHZ045-046-054>056-065-300000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 205 PM EDT FRI MAY 29 1998 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF CENTRAL OHIO... THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA HAS ISSUED A SEVERE THUNDERSTORM WATCH...EFFECTIVE UNTIL 8 PM EDT...FOR PARTS OF CENTRAL OHIO. CITIES IN THE WATCH AREA INCLUDE COLUMBUS...NEWARK...DELAWARE AND MARYSVILLE. AT 2 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED WIDELY SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING WITHIN THE WATCH AREA. THUNDERSTORMS WILL BECOME MORE NUMEROUS THIS AFTERNOON...AND CONDITIONS WILL BE FAVORABLE FOR ANY THUNDERSTORMS TO PRODUCE DAMAGING WIND GUSTS AND LARGE HAIL. IF YOU ARE LOCATED WITHIN OR CLOSE TO THE WATCH AREA...STAY TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA OUTLETS FOR UPDATES...INCLUDING POSSIBLE WARNINGS. ROWLEY
Special weather statement, May 29, 2:05 PM EDT, 2 hours 22 minutes before
OHZ045-046-054>056-065-300000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 205 PM EDT FRI MAY 29 1998 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR PARTS OF CENTRAL OHIO... THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA HAS ISSUED A SEVERE THUNDERSTORM WATCH...EFFECTIVE UNTIL 8 PM EDT...FOR PARTS OF CENTRAL OHIO. CITIES IN THE WATCH AREA INCLUDE COLUMBUS...NEWARK...DELAWARE AND MARYSVILLE. AT 2 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED WIDELY SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING WITHIN THE WATCH AREA. THUNDERSTORMS WILL BECOME MORE NUMEROUS THIS AFTERNOON...AND CONDITIONS WILL BE FAVORABLE FOR ANY THUNDERSTORMS TO PRODUCE DAMAGING WIND GUSTS AND LARGE HAIL. IF YOU ARE LOCATED WITHIN OR CLOSE TO THE WATCH AREA...STAY TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA OUTLETS FOR UPDATES...INCLUDING POSSIBLE WARNINGS. ROWLEY
Special weather statement, May 29, 3:37 PM EDT, 50 minutes before
OHZ026-034-035-042>046-051>056-060>065-074-INZ050-058-059-300100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 335 PM EDT (235 PM EDT) FRI MAY 29 1998 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM EDT (8 PM EST) EAST CENTRAL INDIANA...THE MIAMI VALLEY OF OHIO AND CENTRAL OHIO... THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA HAS ISSUED A SEVERE THUNDERSTORM WATCH...EFFECTIVE UNTIL 8 PM EDT...FOR EAST CENTRAL INDIANA...THE MIAMI VALLEY OF OHIO AND CENTRAL OHIO. CITIES IN THE WATCH AREA INCLUDE COLUMBUS...DAYTON...BELLEFONTAINE AND RICHMOND INDIANA. FOR SOME LOCATIONS IN CENTRAL OHIO...INCLUDING DELAWARE...MARYSVILLE... LONDON...NEWARK AND LANCASTER...THIS WATCH REPLACES THE PREVIOUS SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT UNTIL 8 PM EDT. AT 330 PM EDT (230 PM EST)...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A LINE OF STRONG THUNDERSTORMS BETWEEN CELINA...WAPAKONETA AND KENTON...WHILE ADDITIONAL SCATTERED THUNDERSTORMS WERE LOCATED NORTHEAST OF COLUMBUS. THUNDERSTORMS WILL DEVELOP FARTHER SOUTH INTO THE WATCH AREA THIS AFTERNOON AND EVENING...AND CONDITIONS WILL BE FAVORABLE FOR ANY THUNDERSTORMS TO PRODUCE DAMAGING WIND GUSTS AND LARGE HAIL. IF YOU ARE LOCATED WITHIN OR CLOSE TO THE WATCH AREA...STAY TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA OUTLETS FOR UPDATES...INCLUDING POSSIBLE WARNINGS. ROWLEY
Special weather statement, May 29, 3:47 PM EDT, 40 minutes before
OHZ026-034-035-042>046-051>056-060>065-074-INZ050-058-059-300100- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE WILMINGTON OH 345 PM EDT (245 PM EDT) FRI MAY 29 1998 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 9 PM EDT (8 PM EST) EAST CENTRAL INDIANA...THE MIAMI VALLEY OF OHIO AND CENTRAL OHIO... THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA HAS ISSUED A SEVERE THUNDERSTORM WATCH...EFFECTIVE UNTIL 9 PM EDT (8 PM EST)...FOR EAST CENTRAL INDIANA...THE MIAMI VALLEY OF OHIO AND CENTRAL OHIO. CITIES IN THE WATCH AREA INCLUDE COLUMBUS...DAYTON...BELLEFONTAINE AND RICHMOND INDIANA. FOR SOME LOCATIONS IN CENTRAL OHIO...INCLUDING DELAWARE...MARYSVILLE... LONDON...NEWARK AND LANCASTER...THIS WATCH REPLACES THE PREVIOUS SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT UNTIL 8 PM EDT. AT 330 PM EDT (230 PM EST)...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED A LINE OF STRONG THUNDERSTORMS BETWEEN CELINA...WAPAKONETA AND KENTON...WHILE ADDITIONAL SCATTERED THUNDERSTORMS WERE LOCATED NORTHEAST OF COLUMBUS. THUNDERSTORMS WILL DEVELOP FARTHER SOUTH INTO THE WATCH AREA THIS AFTERNOON AND EVENING...AND CONDITIONS WILL BE FAVORABLE FOR ANY THUNDERSTORMS TO PRODUCE DAMAGING WIND GUSTS AND LARGE HAIL. IF YOU ARE LOCATED WITHIN OR CLOSE TO THE WATCH AREA...STAY TUNED TO NOAA WEATHER RADIO OR OTHER MEDIA OUTLETS FOR UPDATES...INCLUDING POSSIBLE WARNINGS. ...CORRECTED EXPIRATION TIME OF WATCH IN FIRST PARAGARAPH... ROWLEY
The office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 3:54 PM EDT | Severe Thunderstorm Warning | ILN | Logan | 46 min |
| May 29, 5:11 PM EDT | Severe Thunderstorm Warning | ILN | Delaware | 54 min |
| May 29, 5:13 PM EDT | Severe Thunderstorm Warning | ILN | Franklin | 47 min |
| May 29, 5:21 PM EDT | Severe Thunderstorm Warning | ILN | Miami | 49 min |
| May 29, 5:24 PM EDT | Severe Thunderstorm Warning | ILN | Darke | 16 min |
| May 29, 5:35 PM EDT | Severe Thunderstorm Warning | ILN | Licking | 65 min |
| May 29, 6:11 PM EDT | Severe Thunderstorm Warning | ILN | Miami | 44 min |
| May 29, 6:38 PM EDT | Severe Thunderstorm Warning | ILN | Clark | 47 min |
Nearby
Severe Thunderstorm Warnings in Ohio, 1998Every severe thunderstorm warning in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.